SOLAR SYSTEM

Learn About The Solar System!

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What Is The Solar System?

The Solar System is our cosmic

neighborhood, centered around the Sun

and comprising the eight planets

(Mercury, Venus, Earth, Mars, Jupiter,

Saturn, Uranus, Neptune) and everything

else gravitationally bound to it, including

dwarf planets (like Pluto), moons,

asteroids, comets, and dust, all orbiting in

elliptical paths.

Sun

The Sun is the star at the center of our solar

system, a massive, glowing ball of hot gas

(mostly hydrogen and helium) that provides

the light and heat essential for life on Earth,

with its immense gravity holding the planets

and other bodies in orbit. It's a yellow dwarf

star, powered by nuclear fusion in its core,

making it the dominant, largest, and most

massive object in our solar system, containing

over 99.8% of its total mass.

Mercury

Mercury is the smallest planet in our solar

system, closest to the Sun, and the

fastest, completing an orbit in just 88 Earth

days. It's a rocky, cratered world with

extreme temperature swings, a massive

iron core, and surprisingly, water ice in

permanently shadowed polar craters,

despite its proximity to the Sun.

Venus

Venus is the second planet from the Sun,

Earth's "sister planet" due to similar size, but

is hellishly hot, shrouded in thick, toxic

carbon dioxide clouds that create an

extreme greenhouse effect, making it the

hottest in our solar system.

Earth

Earth – our home planet – is the third

planet from the Sun, and the fifth largest

planet. It's the only place we know of

inhabited by living things.

Mars

Mars is the fourth planet from the Sun.

It is also known as the "Red Planet", for

its orange-red appearance. Mars is a

desert-like rocky planet with a tenuous

atmosphere that is primarily carbon

dioxide.

Jupiter

Jupiter is the fifth planet from the Sun and

the largest in the Solar System. It is a gas

giant with a mass nearly 2.5 times that of

all the other planets in the Solar System

combined and slightly less than

one-thousandth the mass of the Sun. Its

diameter is 11 times that of Earth and a

tenth that of the Sun.

Saturn

Saturn is the sixth planet from the Sun, a massive

gas giant known for its spectacular, icy rings, making

it the second-largest planet in our solar system after

Jupiter. Composed mainly of hydrogen and helium,

it's so light it would float in water, yet it boasts over

80 moons, including Titan, and features powerful

winds and unique storms like the hexagonal jet

stream at its north pole, all visible with telescopes

from Earth.

Uranus

Uranus is the seventh planet from the Sun, a

blue-green ice giant known for its extreme axial

tilt, causing it to essentially spin on its side,

leading to unique seasons and odd magnetic

fields. It's the third-largest planet, composed

mainly of icy materials (water, ammonia,

methane) over a rocky core, giving it a cool,

windy atmosphere with faint rings and over two

dozen moons.

Neptune

Neptune is the eighth and farthest planet from the

Sun, an ice giant known for its deep blue color,

supersonic winds, and Great Dark Spot storms; it's

similar to Uranus but more massive, with a

composition of icy materials like water, ammonia,

and methane, and faint rings, discovered

mathematically before being visited by Voyager 2.

How was the solar system formed?

The solar system formed about 4.6 billion years ago from a giant, rotating

cloud of gas and dust called the solar nebula, which collapsed under its own

gravity, flattening into a spinning disk with the Sun forming at the center.

Material in the disk clumped together, forming planets, moons, asteroids,

and comets, with the young Sun's powerful solar wind eventually clearing

out the leftover gas and dust.

Facts about the solar system

Our solar system features the Sun, eight planets, dwarf planets, moons,

asteroids, and comets, with the Sun containing 99.86% of its mass;

Jupiter is the largest planet, Venus is the hottest, Uranus spins sideways,

and Earth is the only known place with life, though probes are exploring

the potential for water and past life on other worlds like Mars.

Interesting things about the solar system

Our solar system is full of extremes, from Jupiter's massive storms and

Saturn's icy rings, to Venus being hotter than Mercury despite being

farther from the Sun, and Uranus spinning on its side. It's a place with

watery moons like Ganymede, the solar system's tallest volcano on Mars,

and even Mars sunsets that are blue, all orbiting a sun that holds 99.86%

of the system's mass and takes 230 million years to circle the Milky Way.

Fun Fact

Did you know that years ago, you could see the milky way shining with a

naked eye? It's

very visible from Earth! You could see thousands of stars years ago and

now it's rare to

even see one. Why not anymore? Light pollution. There are lights

everywhere blocking

the view. You can still see it when light pollution isn't in the area.

Before Before After

This is how different it is.

You've learned about the main

information of the solar system!

Learn More About The Solar System Here

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